EP 1040336 A1 20001004 - METHOD FOR ON-LINE ANALYSIS OF ACID CATALYST FOR HYDROCARBON CONVERSION PROCESS
Title (en)
METHOD FOR ON-LINE ANALYSIS OF ACID CATALYST FOR HYDROCARBON CONVERSION PROCESS
Title (de)
VERFAHREN ZUR ON-LINE ANALYSE EINES SAUREN KATALYSATORS FÜR EIN VERFAHREN ZUR UMWANDLUNG VON KOHLENWASSERSTOFFEN
Title (fr)
PROCEDE D'ANALYSE EN LIGNE D'UN CATALYSEUR ACIDE POUR UN PROCESSUS DE TRANSFORMATION D'HYDROCARBURES
Publication
Application
Priority
- US 9826662 W 19981216
- US 6986797 P 19971217
- US 20821998 A 19981209
Abstract (en)
[origin: WO9931484A1] A computer implemented method for on-line determination of concentration in an HF alkylation process catalyst stream containing HF acid, ASO, water and optionally an additive which suppresses the vapor pressure of HF acid. The method employs near-infrared spectroscopy coupled with chemometric data analysis. The data analysis uses a partial least squares regression technique which determines unknown concentrations based on spectral calibration data. In use, an absorbance spectrum of material is obtained, e.g. from a slipstream taken from the process alkylation catalyst stream, and the detected spectrum is mathematically analyzed with the aid of the computer to simultaneously predict concentration of HF acid ASO, water and optionally the additive which suppresses the vapor pressure of HF acid.
IPC 1-7
IPC 8 full level
G01N 21/35 (2006.01)
CPC (source: EP US)
G01N 21/3577 (2013.01 - EP US); G01N 21/359 (2013.01 - EP US); Y10T 436/21 (2015.01 - EP US)
Citation (search report)
See references of WO 9931484A1
Designated contracting state (EPC)
AT BE DE DK ES FI FR GB IT NL PT SE
DOCDB simple family (publication)
WO 9931484 A1 19990624; AT E363066 T1 20070615; AU 1828699 A 19990705; CA 2310496 A1 19990624; CA 2310496 C 20050503; DE 69837814 D1 20070705; DE 69837814 T2 20080131; EP 1040336 A1 20001004; EP 1040336 B1 20070523; ES 2287985 T3 20071216; PT 1040336 E 20070727; US 6096553 A 20000801
DOCDB simple family (application)
US 9826662 W 19981216; AT 98963216 T 19981216; AU 1828699 A 19981216; CA 2310496 A 19981216; DE 69837814 T 19981216; EP 98963216 A 19981216; ES 98963216 T 19981216; PT 98963216 T 19981216; US 20821998 A 19981209